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MRAS

Middle River Aerostructure Systems

Baltimore, Maryland, United States

Air SystemsMRO & LogisticsDual-use
Subsystem Manufacturer, MRO & Services
Profile last updated: August 14, 2026

About

MRAS is a defense subsystem manufacturer based in Baltimore, United States working in air systems, mro & logistics.

MRAS, formerly Middle River Aircraft Systems, is an aerostructures and engine nacelle manufacturer based in Baltimore, Maryland. It designs, develops, assembles and tests complex composite aerostructures, nacelles and thrust reverser systems for military and commercial aircraft, and provides engineering, certification support and FAA/EASA Part 145 repair station MRO services. The company was acquired by ST Engineering in 2019 and rebranded as Middle River Aerostructure Systems. Its roots trace back to the Glenn L. Martin Company, which produced aircraft and guided missiles, and later Martin Marietta and Lockheed Martin.

Location

Baltimore, United States

Company type

Subsidiary

Legal name

Middle River Aerostructure Systems

Focus areas

aerostructuresengine nacellesthrust reverserscompositesMROPart 145military applicationsST Engineering

Languages

EN

Products & capabilities

Defense domains

Air SystemsMRO & Logistics

Supply-chain role

Subsystem ManufacturerMRO & Services

What they offer

HardwareManufacturing ServicesEngineering ServicesMaintenance & Repair

Markets

Also sells to civilian markets

Products

Nacelle systems

Aircraft engine nacelle

Engine nacelles, thrust reversers, fan cowls and inlet structures for military and commercial aircraft.

Engine build-up

Engine assembly

Engine build-up services for nacelle and engine integration.

Nacelle rotable exchange and lease support

MRO support

Rotable exchange and lease support for nacelle systems.

Standards, platforms & customers

Defense standards

AS9100 Rev. D

Platforms & programmes

CF6-80C2

Credentials & affiliations

Certifications

FAA/EASA Part 145 Repair Station Certificate

Issued by: FAA/EASA

EASA 145-6726

Issued by: EASA

AS9100 Rev. D

ISO 14001

NADCAP NDT

NADCAP Composite

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